Blog posts by pests and pesticides

Written by Jane Sooby on Monday, September 8, 2014 on inputs, pests and pesticides

CCOF encourages you to review California’s proposed plan for invasive plant pest management. A draft Environmental Impact Report (EIR) describing the plan is open for comment through October 8, 2014. In a recent press conference, Sandy Schubert, undersecretary of the California Department of Food and Agriculture (CDFA), stated that the plan offers CDFA’s best assessment of on-the-ground pest management practices and details the state’s decision-making process in taking pest management actions. Laura Petro, CDFA’s Senior Environmental Scientist, said, “This report reflects California’s...
Written by Guest Blogger on Monday, July 14, 2014 on grower, pests and pesticides, research


Citrus greening disease, also known by its Chinese name Huanglongbing, threatens the citrus industry on a massive scale. It has devastated millions of acres of citrus crops throughout the United States and abroad, ravaging citrus in countries in Asia, Africa, and South America. The highly destructive disease can spread quickly, and once a tree is infected it cannot be cured. Citrus greening is spread by the Asian citrus psyllid, a small insect that transmits the disease as it feeds on the leaves and stems of citrus trees. These psyllids are prolific breeders, with each female laying up to 800...
Written by Zea Sonnabend on Wednesday, May 28, 2014 on grower, inputs, materials, pests and pesticides


Organic citrus growers have spent more than a year now wading through the decision-making process for policies regarding the spread and eradication of Asian Citrus Psyllid (ACP) and the deadly disease it can spread, Huanglongbing (HLB) or Citrus Greening. The California Department of Food and Agriculture (CDFA) relies on a group of scientists known as the Science Advisory Panel (SAP) for recommendations about trapping and testing protocols, eradication zones, quarantines, and which materials are approved for control and/or eradication. The SAP met in December in Ontario, CA and issued their...
Written by Jane Sooby on Wednesday, May 7, 2014 on grower, pests and pesticides

The bagrada bug, referred to as an “invasive stink bug” by researchers, is often seen as a mating couple on brassica family plants. A native of the African and Asian continents, this insect first made its appearance in the western United States in 2008. Since then, its American range has spread east from Los Angeles County to Arizona and areas of southern Nevada, Utah, and west-central New Mexico. It has been found as far north as Monterey County. The insect has orange and white markings on its body and can be mistaken for the harlequin bug; however, it is much smaller than the harlequin bug...
Written by Zea Sonnabend on Wednesday, February 26, 2014 on pests and pesticides

2014 is the last season in which organic apple and pear growers can use antibiotics to control fire blight. Now is the time to look at non-antibiotic controls, for which there has been significant progress in the past few years. New resources are available to help organic producers make a plan for combatting fire blight. Download the Alternative Controls for Fire Blight 2014 Update. Some additional promising materials are being researched and will become available in the next few years; meanwhile, growers need to start learning to work with the products and techniques available now in order...
Written by Zea Sonnabend on Monday, October 7, 2013 on grower, pests and pesticides

Update October 7, 2013: In September, new Asian Citrus Psyllid (ACP) were found in Dinuba, Exeter, and Wasco, California. This expands the quarantine areas to parts of Kern and Fresno, as well as Tulare County. A quarantine area of 86 square-miles was set up for the find in Exeter on October 2, and similar zones previously in the other new areas. The details and maps can be found at www.cdfa.ca.gov/plant/go/acp-quarantine-sjv. In order to move bulk citrus out of any quarantine area there must be a special permit obtained from CDFA. This involves an ACP-Free Declaration form and the use of...
Written by Zea Sonnabend on Friday, July 19, 2013 on pests and pesticides

The Virginia creeper leafhopper (VCLH), known scientifically as Erythroneura ziczac, has been found in vineyards from the Oregon border to the northern Sacramento Valley, but as of March 2013, it has not made its way to the vineyards of Napa or Sonoma counties. However, VCLH has been found in neighboring Lake and Mendocino counties, primarily in backyard and organic vineyards (1). This newcomer is already common in Ohio, the rest of the Midwest, and some of the east. It is more damaging than the western grape leafhopper. If left untreated, VCLH may cause complete defoliation. For information...
Written by Brise Tencer on Wednesday, January 16, 2013 on grower, inputs, materials, pests and pesticides, regulatory, State Organic Program

Understandably, organic growers are concerned about the Asian Citrus Psyllid (ACP), a pest that is a carrier of a devastating disease of citrus trees, huanglongbing (HLB). ACP findings are particularly concerning for organic producers because of how few choices there are for organic control methods. In cases of CDFA eradication efforts, there are no currently accepted organic treatments, but organic producers do have tools for management and prevention.  We encourage citrus growers to read up on the issue and be proactive with preventive management. In general, organic common sense principles...